Screw mounting for platforms or trays



Nov. 28, 1950 H. TAYLOR ET AL SCREW MOUNTING FOR PLATFORMS 0R TRAYSFiled July 26, 1948 INVENTORS,

Han Tag/01;

Vifigr E. H1012, & Reulren Me/cfier.

Patented Nov. 28, 1950 OR TRAY Harry Taylor, Victor E. Hunt, and ReubenMelcher, Los Angeles, Calif.

Application July 26, 1948, Serial No. 40,768

1 Claim.

This invention relates to screw mounting for platform or tray, and hasamong its salient objects to provide an improved screw mounting andsupport for a platform, table or tray, movably supported at one side orend on an operating screw, with its outer side or end free andunsupported, whereby it can be raised and lowered by turning said screw,and without binding or wedging by reason of the weight at the outer endof said table or tray.

This mechanism is particularly well adapted for supporting, raising andlowering a table, tray or platform in a display or dispensing cabinet,as for popped corn, or for supporting, raising and lowering any sort oftable or shelf, as in a dumbwaiter, where it is supported at one sideonly and is raised and lowered by a single screw.

In order to explain our invention more fully, We have illustrated thesame in a simple embodiment thereof on the accompanying sheet ofdrawings, in which:

Figure 1 is an end elevation of a housing or cabinet structure, with apart broken out to show the attached end of a table or platform'thereinand which is to be raised and lowered by a screw;

Figure 2 is an enlarged horizontal sectional view taken at the line 22on Fig. l, with parts broken out to show construction;

Figure 3 is an enlarged fragmentary vertical sectional view taken on theline 3-3 on Fig. 1, and showing the operating screw and the supportingconnection with said screw;

Figure 4 is an enlarged fragmentary sectional view through the screw anda supporting member for a table or tray;

Figures 5 and 6 are cross sectional details taken, respectively, on theline 55 and 66 on Fig. 4; and

Figure 7 is an enlarged view taken on line 1-1 on Fig. 3.

Referring now in detail to the drawings, we will describe the embodimentof the invention here shown to illustrate one practical form thereof. Inthe drawings, a simple cabinet or housing 18 is shown, of rectangularform in cross section, with a hinged door II at one side. This cabinetcan be of any desired style, design or size, to be determined by thepurpose for which it is to be used.

Mounted in one end of said housing is a vertical supporting andoperating screw I 2, revolubly supported at its lower end upon a ball13, in a tubular bearing member I4, adjustably held in a nut l5, securedupon a supporting bracket 16, on the 2 inside of the housing wall, asclearly shown in Fig. 3.

The upper end of said screw is held in another bracket I7, and isprovided with a beveled gear i8, which is in mesh with a beveled gear19, on an operating shaft 20, provided with an operating handle 2i,whereby said screw can be turned in either direction by turning saidhandle.

A connecting and supporting member 22 has upper and lower bearing ringportions, as 23 and 2G, to fit around said screw. In said bearing ringsare secured two threaded bushing or lining elements, as 23 and 24,bearing, respectively on the outer and inner sides of said screw, asclearly illustrated in Fig. 4, and seen in Figs. 5 and 6.

Connected with said member 22 is a frame, as 25, having angular bracemembers 26, 26, said frame being of such size as will fit in thehousing, as illustrated in Fig. 2. The attached end of said frame issecured to the supporting member 22, as by bolts or rivets 2'5, 21, asseen in Figs. 2, 3 and 4.

Mounted upon said frame 25 is a perforated plate, or other reticulatedmember, as 28, and upon which popped corn or other things can be placed.This platform, table, shelf or tray, whatever kind is desired, can besupported at one side or end in the manner indicated for raising andlowering it by the simple turning of the supporting screw. It is thefirst object of the invention to provide a mounting for such a table,shelf or tray, at one side or end only, whereby it can be raised andlowered without binding on account of weight thereon.

We do not limit the invention to the details of construction andarrangement shown for illustrative purposes, except as we may be limitedby the hereto appended claim forming a part of this specification.

We claim:

In combination with a platform to be horizontally supported by one sidewith its other side free, a vertical screw for supporting said platform,said screw being supported at its lower and upper ends, with means forturning said screw manually in either direction, of a platformsupporting member having two vertically spaced ring portions to receivesaid screw therethrough and not threaded, and two half bushings,internally threaded to mesh with said supporting screw, one of saidbushings being inserted in the upper ring portion on the outer side ofsaid screw and the other of said bushings being inserted in the lowerring portion on the inner side thereof, whereby said bushings engagesaid screw on opposite sides to take the pressure caused by the tiltingmove- 3 ment of said spaced ring portions, in the manner Numberillustrated. 1,042,611 HARRY TAYLOR. 1 125,911 VICTOR E. HUNT. 93 759REUBEN MELCHER. 1 345 997 1,676,660 REFERENCES CITED 2,220419 Thefollowing references are of record in the 2, file of this patent: w

UNITED STAJZES PATENTS Number Number Name Date 17,620

667,277 Williams Feb. 5, 1901 Name Date Schulz Oct. 29, 1912 PeriolatJan. 19, 1915 Groot Feb. 11, 1919 Van Berkel July 20, 1920 Moyer July10, 1928 Meldahl Nov. 5, 1940 Arens Oct. 16, 1945 FOREIGN PATENTSCountry Date Great Britain Aug. 16, 1898

